OVERVIEW

Toyota tuned safe, predictable understeer into the GR Corolla from the factory. Whiteline's BTR102Z 24mm Heavy Duty Blade Adjustable Rear Sway Bar is the most cost-effective fix. Cold-formed from solid high-tensile spring steel, it replaces the factory 48812-12510 stabilizer bar and delivers 154.6% more roll resistance at its 24mm setting, shifting lateral load forward so the front tires can actually work. Turn-in gets sharper, the chassis rotates on throttle instead of pushing wide, and the car stays flat through fast sweepers. Three-point blade adjustability lets you dial it soft for a rough commute or hard for a track day — in minutes, with basic hand tools, and no alignment required afterward.

FEATURES

• 154.6% Stiffer Than Factory: At its 24mm setting the bar delivers well over double the roll resistance of the OE stabilizer bar, with soft and hard positions on either side to fine-tune balance.
• Kills Factory Understeer: Increasing rear roll resistance shifts lateral load to the front axle, sharpening turn-in and encouraging the chassis to rotate rather than push wide.
• 3-Point Blade Adjustability: Three mounting positions let you retune rear roll stiffness in minutes — soft for comfort and low-grip conditions, medium for balanced street driving, hard for maximum roll control on track.
• Solid Spring Steel Construction: Cold-formed from high-tensile solid spring steel for consistent torsional response and long-term durability under sustained track abuse.
• Synthetic Elastomer Bushings: Grease-free, low-maintenance polyurethane mounting bushings resist heat, oil and weathering while eliminating the deflection and squeak of worn rubber — without adding harsh NVH.
• Direct Bolt-On, No Alignment Needed: Uses OEM mounting points and factory or aftermarket end links. Roughly a 1-hour install, and no trip to the alignment rack afterward.
• Limited Lifetime Warranty: Backed by Whiteline's limited lifetime warranty on the bar.

SPECIFICATIONS

• Bar Diameter: 24mm (61/64" / 0.944")
• Material: Solid High-Tensile Spring Steel
• Adjustability: 3-Point Blade Adjustable
• Fitting Position: Rear
• Installation Time: Approx. 1 Hour
• Wheel Alignment Required: No
• Warranty: Limited Lifetime

Adjustment Settings:

Always set the left and right sides of the bar to the same hole position.

WHAT IS INCLUDED

• 1x 24mm 3-Point Blade Adjustable Rear Sway Bar
• 2x Synthetic Elastomer Mounting Bushings
• 2x Mounting Saddles
• 2x Lateral Lock Clamps

PART NUMBER

• BTR102Z

OEM Cross-Reference — Direct Replacement For:

• Toyota 48812-12510 — Bar, Stabilizer, Rear (GR Corolla)

FITMENT

• 2023+ Toyota GR Corolla